Recent work had focused on focussed on developing drill-ready targets at prospects which have not previously been tested and have returned strong grades from previously un-sampled areas.
In-situ samples taken from quartz dykes/structures have returned high-grade tungsten, including 10.9%, 7.1%, 6.07%, 1.4% WO3 in separate locations.
Meanwhile, quartz breccia float around shaft and mullock dumps returned 20.8%, 10.5%, 9.3%, 8.9%, 5.0%, 4.85%, 5.7%, 2.04% WO3 from multiple locations.
Final rock chip and soil samples from this program have been submitted and results are awaited.
The next stage of work will be shallow (<2 metre deep) trenching at intervals along the sampled trends and then shallow drilling under these works
Morille covers 57 square kilometres and contains 33 documented historic mines and mineral occurrences. It has an Exploration Target of 4 million to 11 million tonnes at 0.25% to 0.5% WO3.
The project was historically mined by small groups of undercapitalised miners who typically operated within small tenements of typically less than 10 hectares and at very shallow depths.
An estimated 780,000 tonnes of tungsten and tin bearing ore was produced from within the project area until cessation of mining in the mid 1980's.
Plymouth has an 80% interest in the project.
Recent work has focussed on exploration and development of drill-ready targets at prospects which have not previously been tested.
This is designed to both increase the number of drill-ready targets at Morille and also confirm the validity of the Exploration Target estimated by Plymouth.
The focus at Morille is to explore for shallow, open-pittable mineralisation which could be rapidly advanced towards production.
This recent round of work commenced in December and has now concluded with the majority of results returned.
Mineralisation at Morille can broadly be defined as either "Strataform/Stratabound" or "Lode" styles.
Whilst these styles can be found across the 57 square kilometre project area, Strataform mineralisation as found in carbonate horizons and 'skarn-like' is typically found and has been historically mined in the eastern area (ACMA prospect) and the 'Lode' style mineralisation is common in the Westside area.
Sampling at the historic Paquita and La Malena mines returned skarn-like, "Stratabound" mineralisation analogous to that mined at Alegria Mine and "Lode style" as well.
This represents a strike of over 2,000 metres in which a prospective calc-silicate sedimentary horizon has been observed at several locations.
Lode style mineralisation is characterised by sub vertical quartz vein/dyke hosts and often very high grades such as those mined over 400 metres strike and to depths of 75 metres with mined widths varying between 1.5 metres and 7 metres true width at the Anarbellas mine.
Sampling at Anarbellas Sur and Pili mine over 1,000 metres to the south has identified comparable quartz vein/dyke sets.
These quartz veins are often variable in width and form 'swarms' or 'sets' in which several quartz veins will extend for 10's to 100's metres in strike and regularly sit sub-parallel to each other in a broad 050-230 degree trend.
This has been observed and drilled at Toro de Nueva Banco and Anarbellas by Plymouth.
Particularly high-grade material was taken from Pacquita and Pili mine areas. The Pili mine was exploited over a 250 metre strike where quartz veins were exposed.
Samples were taken over 225 metres of this trend. Shallow shafts were hand sunk on individual veins.
This has potential for open pit mining by combining vein sets for larger scale mechanical mining.
Mineralisation at Pacquita was taken from several locations.
The sampled trend extends to the north-west and towards the Alegria mine in the south-east on a broadly 110-290 degree strike.
Sampling is not able to determine the extent of continuity at present.
The extent and continuity of mineralisation is not known currently due to the limited surface exposure.
Results are exciting as they show high-tenor mineralisation and obvious near-term resource potential through successful exploration.
All of these styles of mineralisation represent excellent, shallow 'walk-up' drill targets that Plymouth believes have the potential to be readily converted into resources with exploration success.
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